Type-writing machine.



A. G.- I. KUROWSKI;

TYPE WRITING MACHINE.

APPLICATION I'ILED D110. 7, 1909.

Patented Feb. 1, 1910.

Fig.4

UNITED STATES PA ENT oFFroE.

ALFRED F. KUROWSKI, OF NEW YORK, N. Y., ASSIGNOR 'IO UNDERWOOD TYPE- WRITEE COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

TYPE-WRITING MACHINE.

v Specification of Letters Patent.

Patented Feb. 1, 1910.

To all whom it may concern."

Be it known that I, ALFRED G. F. KURow- SKI, a citizen of the United States, residing in New York city, borough of Bronx, in the county of New York and State of New York, have invented certain new and useful Improvements in Type-Writing Machines, of which the following is a specification.

This invention relates to marginal stop mechanisms for typewriting machines, and is an improvement upon the construction shown in application No. 530,326, filed November 29, 1909 by August Obernolte. In said application is shown a margin-regulating lever having both main and auxiliary stops alternately thrown into and out of use, to vary the width of margin to be left on the sheet.

My invention provides means whereby the operator can, by a single operation, not only throw the auxiliary stop into use, but also lock the lever positively in position to maintain the auxiliary stop in use.

The device consists of few parts; is of simple design, easily manufactured and readily applied to existing machines.

. In carrying out the invention, I provide a switch or bolt, the throw of which in one direction rocks the lever carrying the alternately usable main and auxiliary margin stops, and positively locks it in one of its positions to mechanically detain the normally idle auxiliary stop in position for use. By returning the switch to normal position, it releases the lever, which, under the influ- 161106 of its spring, brings the main stop into use and silences the auxiliary stop.

In the accompanying drawings, Figure 1 is a perspective view of the Underwood type of front strike writing machine, showing one embodiment of my invention in active position, parts being broken away to better disclose the construction. Fig. 2 is a top plan view, showingthe invention in inactive position. Fig. 3 is a detail perspective view showing the manner of application of the inventionto the machine. Figs. 4 and 5 are detail side views showing the detent in and out of operative position, respectively.

A carriage 1 travels on the framework 2 of a typewriting machine. A margin-stop lever 3, 4, is pivoted at 5 to the carriage 1. The lever has main and auxiliary stops 6 and 7 on its respective arms 3 and 4 to cooperate alternately withthe usual gage 8 adjustable on the framework 2. By rocking the lever sheet.

It will be understood that the plurality of stops and theircooperation with the gage enables the operator to regulate the width of the left hand margin of the sheet, the 'usual margins being determined by the cooperation of the main stop 6 and the gage 8, whereas the extra wide margins are secured by the cooperation of the auxiliary stop 7 and the gage 8.

I employ a switch or member 9 movable into and out of engagement with one arm 4 of the lever 3, 4 to rock or vibrate the latter and to positively hold it in one of its positions, to maintain the auxiliary stop 7 in use. Such a switch or member 9 is preferably in the form of a slide mounted 011 the carriage 1, provided with a finger-piece 17 and having a cam or inclined face 10, which, when the slide 9 is thrown in one direction, cams down the arm 4 of the lever 3, 4 carrying the normally idle auxiliary stop 7 to throw it into use, and simultaneously lifts and hence silences the main stop 6 on the opposite arm 3 of the lever. The lever is then held down by the slide. The base of the slide behind the cam face 10 may, if desired, be recessed, as at 16, to catch over the edge of the lever 3, 4 and insure that it shall remain in depressed position, the recess be ing beveled to force the lever to yield when the slide is thrust back toward idle position. Upon pushing back the slide 9, the stoplever 3, 4 returns to normal position under the influence of a spring 11. Preferably the slide 9 is mounted on a bracket 12 fastened to the carriage 1 at 13, and having a lug 14 engaging a stationary part 15 of the carriage 1, to hold the bracket 12 rigidly. The

switch 9 cannot jar loose through the impacts of the carriage, owing to the engagement of the notch 16 with the lever 3, 4.

It will be seen that the depression'of the arm 4 of the lever 3, 4 to throw the auxiliary for forcing the lever to and positively maintaining it in one of its positions to efiect a variation in the width of margin on a sheet.

2. In a typewriting machine, the combination with a carriage and a shiftable stop lever thereon having alternately usable stops cooperating With a margin gage, of a switch shiftably mounted on the carriage and having a beveled face for camming the stop lever to onevof its positions to effect a varia- 7 tion in the width of margin on a sheet.

3. In a typewriting machine, the combination with a carriage and a shiftable stop lever thereon having alternately usable stops 25 cooperating with a margin gage, of a switch for mechanically shifting the stop lever, and having a recess to subsequently catch and detain the lever in shifted position to effect a variation in the width of margin on a sheet. 30

ALFRED G. F. KUROVVSKI. Witnesses:

JOHN O. SEIFERT, K. FRANKFORT. 

